Process of loading dental broaches and needles



L. L. FUNK.

PROCESS OF LOADING DENTAL BROACHES AND NEEDLES. NPPHCATION FILED FEB. 24. ms.

1 1 93,68 1'. Patented Aug. 8, 1916.

Lem L. Funk- Witnesses:

LEVI L. FUNK, OF CHICAGO, ILLINOIS.

PROCESS OF LOADING DENTAL BROACHES AND NEEDLES.

Application filed February 24, 1916.

T 0 all whom it may concern Be it known that I, LEVI L. FUNK, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in the Process of Loading Dental Broaches and Needles, of which the following is a specification.

This invention relates to a process whereby fiber, such as cotton, silk, linen, or the like, may be loaded on to a broach or needle without the operator being compelled to have his hands or fingers come in contact with said fiber, while so loading it.

The object of the invention is to obtain a process of loading a broach or needle in a sanitary manner; and in reducing the invention to practice I use a device which is adapted to receive and retain fiber, when the same is discharged thereto from a hook, or otherwise, in suitable quantity, position and condition to be engaged by and wound on said broach or needle.

A further object is to obtain a process of the character named using a device, (hereinafter termed a loader) which permits the fiber which is being placed and retained therein, to be seen, during the time said loader is in use for the purposes named.

Further objects of the invention are to enable dentists, surgeons and physicians to carry on this process in suitable manner, and at a reasonable cost, and to effect said objects I obtain a loader which is economically made, and removably attachable to a suitable handle; a loader which is durable easily replaceable, for sanitary or other reasons, not liable to get out of order, and one the operation whereof is easily understandable by those skilled in the art to which the use of the device pertains.

The device hereinbefore termed a loader is illustrated in the drawings, and is shown in Figure 1, in perspective as removably attached to a suitable handle. Fig. 2 is a perspective of said loader removably attached to a modified handle. Fig. 3, is a perspective of the loader embodying the invention, of a portion of a handle thereto, and of the hook which is illustrated in Fig. 3, with some fiber thereon. Fig. 4, is a perspective of said loader, mounted on the handle illustrated in Figs. 2 and 4, of a hand suitably grasping and a broach or needle engaged with fiber. And Fig. 5, is a perspective of a broach having fiber thereon.

Specification of Letters Patent.

Patented Aug. 8, 1916.

Serial No. 80,239.

A reference letter applied to designate a glven part indicates said part throughout the several figures of the drawing. wherever the same appears.

A, Fig. 1, represents a handle which is provided with a post a.

B, represents a handle which is cylindrical at one end; said cylindrical portion being provided with slot 6.

D is a two leaved sheet of flexible resilient material, said leaves being lettered d, (P. Leaves (Z, d are obtained by bending a sheet of flexible resilient material over upon itself and said sheet is so bent as to obtain cylindrical portion 6?. Said cylindrical portion (5 is adapted to fit over post a of handle A, and to fit into the cylindrical portion of handle B. When cylindrical portion (Z is placed on the post a, a reasonably close contact is made, so that the said two leaved sheet D and post a will not separate, (to fall apart), while at the same time the said tWo leaved sheet is removably attached to said handle. When said two leaved sheet D is attached to handle B by the cylindrical portion d thereof being inserted in the end of said handle, the said leaves d, (P, extend through slot 6, as is Well illustratedin Fig. 2. A reasonably close fit between said last named parts is made, so that said two leaved member is removably attached to said handle B.

The leaves (2, (P, are so shaped that the bottom edges thereof and a portion of the end edges (lettered (1 in Fig. 2) are in contact or nearly so, while the top or upper edges thereof (65*) and the upper portion of the end edges, (lettered (i are not in contact. The last named relative position of the bottom, top and end edges of said leaves (1, (Z is the result of a flaring of said leaves relative to each other. Because of the relative flaring of said leaves and the resiliency of the material forming them, a hook carrying fiber engaged therewith may readily be inserted between said leaves, as is illustrated in Fig. 4E, and the said fiber may be drawn downward between said leaves so that said fiber will be retained and held in position by said leaves and the hook removed from said fiber.

G is a hook which is provided with a suitable handle, as g. Said hook G with fiber thereon, lettered H Fig. 3), being in substantially the position illustrated in said Fig. 3, may then be drawn downward between leaves d, (Z into position so that said fiber, H is retained between said leaves, at which time the hook may be disengaged from said fiber, and said leaves are loaded. Upon the removal of the hook G as set forth, a needle or broach I, may be inserted be tween said leaves d, (P, and engaged with said mass of fiber H. The said leaves (Z, al may be grasped between the thumb and fore finger of the hand, (illustrated as X in said Fig. 4), at the same time that engagement is made of the fiber, by needle or broach I, and pressure may be applied to said leaves.

The combined effect of the rotation of the needle or broach and of the pressure applied to the leaves, (Z, al will result in winding the fiber contained between the said leaves onto said needle or broach; the firmness of said winding and the consequent condition of the fiber relative to tight and loose Winding on said needle or broach, being controlled by said pressure on said leaves. When the fiber,

which is loaded as before described between leaves d, (2 and is wound on to said needle or broach as set forth, the same are removed from between said leaves, said fiber remaining on said broach or needle, as illustrated in Fig. 5 of the drawing.

I'make the leaves (1, d of translucent celluloid, when I desire to have the operation of loading the device and of removing the load therein by a needle or broach, at all times under observation.

To those skilled in the art it will be understood that mica, collodion, or other translucent, flexible and resilient material, are well known substitutes for the celluloid sheets which are used by me.

I desire it to be understood that in using Copies of this patent may be obtained for the word cylindrical to describe the part (F, I do not confine myself to obtaining a correct cylindrical shape as the purpose of said part d is simply to expand or enlarge said sheet at the bend thereof, so that part a of handle A may be inserted therein and said leaves D held thereon and also when said part d is inserted in the end of holder B, as V in Figs. 2, 3 and 4:, the portion d can not readily be drawn out through the slot 6.

The process herein set forth is particularly useful in dentistry, where it is desirable to wind fiber on the end of a broach for cleaning nerve channels, or root canals, and other purposes. By using the above described devices in carrying out the process embodying the invention the hand of the operator does not come in contact with the fiber used.

Vhile I have mentioned only the turning v of the broach or needle it is evident that a turning movement may be also imparted to the loader, (in the opposite direction to which the broach or needle is turned), and

LEVI L. FUNK.

Witnesses: CHARLES TURNER BROWN, HELYN MULDOWNEY.

five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

